var CreatedOKLodop7766 = null, CLodopIsLocal;

// ====判断是否需要 Web打印服务CLodop:===
// ===(不支持插件的浏览器版本需要用它)===
export function needCLodop () {
    try {
        var ua = navigator.userAgent;
        if (ua.match(/Windows\sPhone/i)) { return true; }
        if (ua.match(/iPhone|iPod|iPad/i)) { return true; }
        if (ua.match(/Android/i)) { return true; }
        if (ua.match(/Edge\D?\d+/i)) { return true; }

        var verTrident = ua.match(/Trident\D?\d+/i);
        var verIE = ua.match(/MSIE\D?\d+/i);
        var verOPR = ua.match(/OPR\D?\d+/i);
        var verFF = ua.match(/Firefox\D?\d+/i);
        var x64 = ua.match(/x64/i);
        if ((!verTrident) && (!verIE) && (x64)) { return true; } else if (verFF) {
            verFF = verFF[0].match(/\d+/);
            if ((verFF[0] >= 41) || (x64)) { return true; }
        } else if (verOPR) {
            verOPR = verOPR[0].match(/\d+/);
            if (verOPR[0] >= 32) { return true; }
        } else if ((!verTrident) && (!verIE)) {
            var verChrome = ua.match(/Chrome\D?\d+/i);
            if (verChrome) {
                verChrome = verChrome[0].match(/\d+/);
                if (verChrome[0] >= 41) { return true; }
            }
        }
        return false;
    } catch (err) {
        return true;
    }
}

// ====页面引用CLodop云打印必须的JS文件,用双端口(8000和18000）避免其中某个被占用：====
if (needCLodop()) {
    var src1 = 'http://localhost:8000/CLodopfuncs.js?priority=1';
    var src2 = 'http://localhost:18000/CLodopfuncs.js?priority=0';

    var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement;
    var oscript = document.createElement('script');
    oscript.src = src1;
    head.insertBefore(oscript, head.firstChild);
    oscript = document.createElement('script');
    oscript.src = src2;
    head.insertBefore(oscript, head.firstChild);
    CLodopIsLocal = !!((src1 + src2).match(/\/\/localho|\/\/127.0.0./i));
}

// ====获取LODOP对象的主过程：====
export function getLodop (oOBJECT, oEMBED) {
    var strHtmInstall = '<br><font color=\'#FF00FF\'>打印控件未安装!点击这里<a href=\'install_lodop32.zip\' target=\'_self\'>执行安装</a>,安装后请刷新页面或重新进入。</font>';
    var strHtmUpdate = '<br><font color=\'#FF00FF\'>打印控件需要升级!点击这里<a href=\'install_lodop32.zip\' target=\'_self\'>执行升级</a>,升级后请重新进入。</font>';
    var strHtm64_Install = '<br><font color=\'#FF00FF\'>打印控件未安装!点击这里<a href=\'install_lodop64.zip\' target=\'_self\'>执行安装</a>,安装后请刷新页面或重新进入。</font>';
    var strHtm64_Update = '<br><font color=\'#FF00FF\'>打印控件需要升级!点击这里<a href=\'install_lodop64.zip\' target=\'_self\'>执行升级</a>,升级后请重新进入。</font>';
    var strHtmFireFox = '<br><br><font color=\'#FF00FF\'>（注意：如曾安装过Lodop旧版附件npActiveXPLugin,请在【工具】->【附加组件】->【扩展】中先卸它）</font>';
    var strHtmChrome = '<br><br><font color=\'#FF00FF\'>(如果此前正常，仅因浏览器升级或重安装而出问题，需重新执行以上安装）</font>';
    var strCLodopInstall_1 = '<br><font color=\'#FF00FF\'>Web打印服务CLodop未安装启动，点击这里<a href=\'CLodop_Setup_for_Win32NT.zip\' target=\'_self\'>下载执行安装</a>';
    var strCLodopInstall_2 = '<br>（若此前已安装过，可<a href=\'CLodop.protocol:setup\' target=\'_self\'>点这里直接再次启动</a>）';
    var strCLodopInstall_3 = '，成功后请刷新本页面。</font>';
    var strCLodopUpdate = '<br><font color=\'#FF00FF\'>Web打印服务CLodop需升级!点击这里<a href=\'CLodop_Setup_for_Win32NT.zip\' target=\'_self\'>执行升级</a>,升级后请刷新页面。</font>';
    var LODOP;
    try {
        var ua = navigator.userAgent;
        var isIE = !!(ua.match(/MSIE/i)) || !!(ua.match(/Trident/i));
        if (needCLodop()) {
            try {
                LODOP = getCLodop();
            } catch (err) {}
            if (!LODOP && document.readyState !== 'complete') {
                alert('网页还没下载完毕，请稍等一下再操作.');
                return;
            }
            if (!LODOP) {
                document.body.innerHTML = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : '') + strCLodopInstall_3 + document.body.innerHTML;
                return;
            } else {
                if (CLODOP.CVERSION < '3.0.6.0') {
                    document.body.innerHTML = strCLodopUpdate + document.body.innerHTML;
                }
                if (oEMBED && oEMBED.parentNode) { oEMBED.parentNode.removeChild(oEMBED); }
                if (oOBJECT && oOBJECT.parentNode) { oOBJECT.parentNode.removeChild(oOBJECT); }
            }
        } else {
            var is64IE = isIE && !!(ua.match(/x64/i));
            // =====如果页面有Lodop就直接使用，没有则新建:==========
            if (oOBJECT || oEMBED) {
                if (isIE) { LODOP = oOBJECT; } else { LODOP = oEMBED; }
            } else if (!CreatedOKLodop7766) {
                LODOP = document.createElement('object');
                LODOP.setAttribute('width', 0);
                LODOP.setAttribute('height', 0);
                LODOP.setAttribute('style', 'position:absolute;left:0px;top:-100px;width:0px;height:0px;');
                if (isIE) { LODOP.setAttribute('classid', 'clsid:2105C259-1E0C-4534-8141-A753534CB4CA'); } else { LODOP.setAttribute('type', 'application/x-print-lodop'); }
                document.documentElement.appendChild(LODOP);
                CreatedOKLodop7766 = LODOP;
            } else { LODOP = CreatedOKLodop7766; }
            // =====Lodop插件未安装时提示下载地址:==========
            if ((!LODOP) || (!LODOP.VERSION)) {
                if (ua.indexOf('Chrome') >= 0) { document.body.innerHTML = strHtmChrome + document.body.innerHTML; }
                if (ua.indexOf('Firefox') >= 0) { document.body.innerHTML = strHtmFireFox + document.body.innerHTML; }
                document.body.innerHTML = (is64IE ? strHtm64_Install : strHtmInstall) + document.body.innerHTML;
                return LODOP;
            }
        }
        if (LODOP.VERSION < '6.2.2.4') {
            if (!needCLodop()) { document.body.innerHTML = (is64IE ? strHtm64_Update : strHtmUpdate) + document.body.innerHTML; }
            return LODOP;
        }
        // ===如下空白位置适合调用统一功能(如注册语句、语言选择等):==

        LODOP.SET_LICENSES('', '13528A153BAEE3A0254B9507DCDE2839', '', '');
        // =======================================================
        return LODOP;
    } catch (err) {
        alert('getLodop出错:' + err);
    }
}
